Exploration of Floral Volatile Organic Compounds in Six Typical Lycoris taxa by GC-MS

Lycoris, which is known as the ‘Chinese tulip,’ has diverse flower colors and shapes, and some species have a delicate fragrance. However, limited studies have reported the volatile organic compounds (VOCs) of Lycoris. In this study, headspace solid-phase microextraction combined with gas chromatogr...

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Autores principales: Shi, Tingting, Yue, Yuanzheng, Shi, Man, Chen, Min, Yang, Xiulian, Wang, Lianggui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6843165/
https://www.ncbi.nlm.nih.gov/pubmed/31627411
http://dx.doi.org/10.3390/plants8100422
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author Shi, Tingting
Yue, Yuanzheng
Shi, Man
Chen, Min
Yang, Xiulian
Wang, Lianggui
author_facet Shi, Tingting
Yue, Yuanzheng
Shi, Man
Chen, Min
Yang, Xiulian
Wang, Lianggui
author_sort Shi, Tingting
collection PubMed
description Lycoris, which is known as the ‘Chinese tulip,’ has diverse flower colors and shapes, and some species have a delicate fragrance. However, limited studies have reported the volatile organic compounds (VOCs) of Lycoris. In this study, headspace solid-phase microextraction combined with gas chromatography-mass spectrometry was used to analyze the floral VOCs of six typical Lycoris taxa. Thirty-two VOCs were identified, including terpenoids, alcohols, esters, aldehydes, ketones, and phenols. The aldehyde and terpenoid contents in Lycoris aurea were higher than in the other taxa, and the ester and alcohol contents in L. sprengeri were the highest compared to all taxa tested. Compared with other species and cultivars, L. longituba and L. longituba var. flava were the two most scented taxa and the VOCs were dominated by terpenoids and esters. L. radiate and L. chinensis were two unscented taxa and, accordingly, the VOC content was weak. A partial least squares discriminate analysis of the floral VOCs among the six Lycoris taxa showed that the six taxa could be successfully separated. Moreover, the VOCs of L. longituba and L. longituba var. flava clustered together. β-Ocimene was verified as the most important aroma compound, as determined via the calculation of the variable importance in projection values and significance analysis. β-Ocimene and its trans isomer, trans-β-ocimene, had a high relative content in L. longituba, L. longituba var. flava, L. aurea, and L. chinensis but were not detected in L. sprengeri and L. radiata. These results indicate that floral VOCs might be selected during the evolutional processes of Lycoris, and β-ocimene could be the most typical VOC among the different Lycoris taxa.
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spelling pubmed-68431652019-11-25 Exploration of Floral Volatile Organic Compounds in Six Typical Lycoris taxa by GC-MS Shi, Tingting Yue, Yuanzheng Shi, Man Chen, Min Yang, Xiulian Wang, Lianggui Plants (Basel) Communication Lycoris, which is known as the ‘Chinese tulip,’ has diverse flower colors and shapes, and some species have a delicate fragrance. However, limited studies have reported the volatile organic compounds (VOCs) of Lycoris. In this study, headspace solid-phase microextraction combined with gas chromatography-mass spectrometry was used to analyze the floral VOCs of six typical Lycoris taxa. Thirty-two VOCs were identified, including terpenoids, alcohols, esters, aldehydes, ketones, and phenols. The aldehyde and terpenoid contents in Lycoris aurea were higher than in the other taxa, and the ester and alcohol contents in L. sprengeri were the highest compared to all taxa tested. Compared with other species and cultivars, L. longituba and L. longituba var. flava were the two most scented taxa and the VOCs were dominated by terpenoids and esters. L. radiate and L. chinensis were two unscented taxa and, accordingly, the VOC content was weak. A partial least squares discriminate analysis of the floral VOCs among the six Lycoris taxa showed that the six taxa could be successfully separated. Moreover, the VOCs of L. longituba and L. longituba var. flava clustered together. β-Ocimene was verified as the most important aroma compound, as determined via the calculation of the variable importance in projection values and significance analysis. β-Ocimene and its trans isomer, trans-β-ocimene, had a high relative content in L. longituba, L. longituba var. flava, L. aurea, and L. chinensis but were not detected in L. sprengeri and L. radiata. These results indicate that floral VOCs might be selected during the evolutional processes of Lycoris, and β-ocimene could be the most typical VOC among the different Lycoris taxa. MDPI 2019-10-17 /pmc/articles/PMC6843165/ /pubmed/31627411 http://dx.doi.org/10.3390/plants8100422 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Shi, Tingting
Yue, Yuanzheng
Shi, Man
Chen, Min
Yang, Xiulian
Wang, Lianggui
Exploration of Floral Volatile Organic Compounds in Six Typical Lycoris taxa by GC-MS
title Exploration of Floral Volatile Organic Compounds in Six Typical Lycoris taxa by GC-MS
title_full Exploration of Floral Volatile Organic Compounds in Six Typical Lycoris taxa by GC-MS
title_fullStr Exploration of Floral Volatile Organic Compounds in Six Typical Lycoris taxa by GC-MS
title_full_unstemmed Exploration of Floral Volatile Organic Compounds in Six Typical Lycoris taxa by GC-MS
title_short Exploration of Floral Volatile Organic Compounds in Six Typical Lycoris taxa by GC-MS
title_sort exploration of floral volatile organic compounds in six typical lycoris taxa by gc-ms
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6843165/
https://www.ncbi.nlm.nih.gov/pubmed/31627411
http://dx.doi.org/10.3390/plants8100422
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